Science · Five Laws of Library Science
एस. आर. रंगनाथन द्वारा पुस्तकालय विज्ञान के पांच नियम पहली बार किस वर्ष पुस्तक के रूप में प्रकाशित किए गए थे?
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सही उत्तर देखें
1931
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